Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [smtpd]

63 questions
1
vote
2 answers

postfix rejects incoming mail / 450 error / hostname returns different ip

I'm trying to find why postfix rejected the incoming mail the line from mail.log is: NOQUEUE: reject: RCPT from unknown[xxx.xxx.xxx.1]: 450 4.7.1 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.1]; from=…
Kuba Zygmunt
  • 13
  • 3
1
vote
1 answer

Postfix mail size counting

If I'm right Postfix counts mail size with an attachment sent to multiple receivers as one big e-mail. Eg.: User sends mail with 8 MB attachment to two receivers. Postfix thinks it's 2 x 8 MB = 16 MB mail. And when message_size_limit is by default…
meridius
  • 113
  • 5
1
vote
1 answer

smtp authentication on postfix mail server with slackware linux 13.1

I am failing to authenticate to the mysql mail database using saslauthd (cyrus-sasl2.1.23) thru pam-mysql. Below are some of the commands execute as well as the configurations root@xxxx:/# ps aux | grep saslauthd root 3443 0.0 0.0 34524 …
user80476
  • 11
  • 1
  • 4
1
vote
1 answer

Postfix/SMTPD Relay Access Denied when sending outside the network

I asked a very similar question some 4 or 5 months ago, but haven't tracked down a suitable answer. I decided to post a new question so that I can ... a) Post updated info b) post my most current postconf -n output When a user sends mail from inside…
David W
  • 3,405
  • 5
  • 34
  • 61
1
vote
2 answers

Lean & mean, basic SMTP server, for use over a single domain, no fwd'ing

Looking for recommendation for a light-weight, SMTP server, with basic capabilities (will be run on port#25, with authentication but clear-channel), and it's use shall be limited to a particular (or a small set of) domain(s), i.e. mail to/from same…
icarus74
  • 21
  • 1
1
vote
1 answer

Postfix advanced relaying config/control

How do I make Postfix only accept outbound mail from $mynetworks if the from is *@mydomain(s) ? To be clear (and differentiate from similar questions I found) I want to make postfix such that users in $mynetworks, not subject to usual relay…
sandroid
  • 1,724
  • 12
  • 16
1
vote
0 answers

Postfix: getting 50 or more copies of the same email from specific senders

I have a Postfix (2.10.1) / Dovecot server running on Centos 7. From specific servers I get about 50 copies of the same email every weekend, I tried a wireshark but it uses STARTTLS so its all encrypted, so I turned on logging in postfix. Everything…
Jeremy
  • 11
  • 2
1
vote
1 answer

Postfix ignores -o settings in master.cf

I'm configuring a Postfix with three services in master.cf. So far I learned from @anx (thank you so much!) that smtpd-based services in master.cf do not understand transport-related options. Only trivial-rewrite-based services support transport…
Joe
  • 111
  • 2
1
vote
1 answer

Postfix rejects emails relayed from O365

I have to do a migration of Office 365 from Postfix with Sogo. My goal is to configure small hybrid of Office 365 with Postfix, a bit the same way you do with Exchange On-premises. Currently, postfix is a primary server with 1000 users and it sends…
MadBoy
  • 3,703
  • 13
  • 61
  • 93
0
votes
1 answer

NOQUEUE: reject: RCPT from 451 4.3.5 Server configuration

Unfortunately after some changes on master.cf and main.cf in postfix I'm getting these errors when I try to send out a e-mail. root@mail:/etc/postfix# tail -f /var/log/syslog | grep "rene.brakus@gkri.hr" Jul 25 17:39:46 mail dovecot:…
Rene
  • 113
  • 2
  • 12
0
votes
1 answer

OpenBSD 6.5 /etc/mail/aliases correct format?

What is the correct entry format for an alias? Right now I have root: xxxx@somewebsite.com Running newaliases -f /etc/mail/aliases yields a syntax error. Are there examples in the manual page for aliases?
user460340
0
votes
2 answers

Why my postfix server is connecting to outside IP constantly?

I've set up a VPS which is working fine. I'm using postfix server to send email using PHP. I was just checking the log files and I noticed that my server is getting a connecting request or connecting to a different host every 2-3 seconds. Is this a…
Vipin Yadav
  • 3
  • 3
0
votes
0 answers

Spam from my Debian Stretch server - postfix

I have a huge problem with my Debian Stretch installation. Out of the blue one client email address started sending a huge amounts o spam. My server uses standard configuration. I installed it with ISPConfig, Postfix, Dovecot, Amavisd,…
Get Schwifty
  • 13
  • 1
  • 2
0
votes
0 answers

Dovecot SpamAssassin results different than standalone

I'm trying to filter spam with smtpd, spampd, dovecot, and SpamAssassin, and I'm finding different results of a spam email between the X-Spam-Report added by spampd/dovecot (which scores low) versus a standalone execution (which scores high). I'm…
Kevin
  • 215
  • 2
  • 10
0
votes
1 answer

How to bypass smtpd_recipient_limit for single domain?

Can any one help me bypassing smtpd_recipient_limit to 100 or 150 for a single domain in postfix ? Apart from those domain all other domains smtpd_recipient_limit should be 50.
Anand Shrestha
  • 41
  • 4
  • 12
1 2
3
4 5